Can't switch to NVIDIA dGPU in KDE Plasma.

[0x41DEAD41]

Select the version

25.0.0.11

Describe your issue

When I switch to nvidia, SDDM and Minetest only render within the area under the moving cursor, and Plasma doesn't even load (almost). Only Trinity works fine.

Steps to reproduce

1. install envycontrol
2. run it - sudo envycontrol -s nvidia --dm sddm --rtd3 0
3. reboot

What did you expect?

I was hoping Plasma would load as it always does.

Additional Information

inxi

System:
  Kernel: 6.16.8-arch1-1 arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
  Desktop: TDE (Trinity) v: R14.1.4 Distro: Arch Linux
Machine:
  Type: Laptop System: ASUSTeK product: TUF GAMING FX504GD_FX80GD v: 1.0
    serial: <superuser required>
  Mobo: ASUSTeK model: FX504GD v: 1.0 serial: <superuser required>
    UEFI: American Megatrends v: FX504GD.322 date: 08/23/2021
Battery:
  ID-1: BAT1 charge: 4.8 Wh (19.8%) condition: 24/48 Wh (50%) volts: 3.28
    min: 11.68 model: ASUS A32-K55 status: discharging
CPU:
  Info: quad core model: Intel Core i5-8300H bits: 64 type: MT MCP
    arch: Coffee Lake rev: A cache: L1: 256 KiB L2: 1024 KiB L3: 8 MiB
  Speed (MHz): avg: 800 min/max: 800/4000 cores: 1: 800 2: 800 3: 800 4: 800
    5: 800 6: 800 7: 800 8: 800 bogomips: 36799
  Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: ASUSTeK
    driver: i915 v: kernel arch: Gen-9.5 bus-ID: 00:02.0
  Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] vendor: ASUSTeK
    driver: nvidia v: 580.82.09 arch: Pascal bus-ID: 01:00.0
  Device-3: Azurewave USB2.0 HD UVC WebCam driver: uvcvideo type: USB
    bus-ID: 1-7:3
  Display: x11 server: X.org with: Xwayland v: 24.1.8 driver: X:
    loaded: modesetting,nvidia dri: iris gpu: i915 resolution: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: iris,nvidia,swrast platforms:
    active: gbm,x11,surfaceless,device inactive: wayland,device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: mesa v: 25.2.3-arch1.2
    glx-v: 1.4 direct-render: yes renderer: zink Vulkan 1.4(NVIDIA GeForce GTX
    1050 (NVIDIA_PROPRIETARY))
  API: Vulkan v: 1.4.321 drivers: nvidia surfaces: N/A devices: 1
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: nvidia-smi wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel
    v: kernel bus-ID: 00:1f.3
  API: ALSA v: k6.16.8-arch1-1 status: kernel-api
  Server-1: aRts v: 1.5.10 status: active
  Server-2: JACK v: 1.9.22 status: off
  Server-3: PipeWire v: 1.4.8 status: off
Network:
  Device-1: Intel Cannon Lake PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3
  IF: wlo1 state: up mac: <filter>
  Device-2: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: ASUSTeK driver: r8169 v: kernel port: 3000 bus-ID: 03:00.0
  IF: enp3s0 state: down mac: <filter>
Bluetooth:
  Device-1: N/A driver: btusb v: 0.8 type: USB bus-ID: 1-14:4
  Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: <filter> bt-v: 5.1 lmp-v: 10
Drives:
  Local Storage: total: 1.36 TiB used: 355.41 GiB (25.4%)
  ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 980 500GB size: 465.76 GiB
    temp: 33.9 C
  ID-2: /dev/sda vendor: Western Digital model: WD10SPZX-22Z10T1
    size: 931.51 GiB
Partition:
  ID-1: / size: 58.76 GiB used: 18.38 GiB (31.3%) fs: ext4 dev: /dev/nvme0n1p4
  ID-2: /boot/efi size: 511 MiB used: 15.1 MiB (3.0%) fs: vfat
    dev: /dev/nvme0n1p6
  ID-3: /home size: 181.67 GiB used: 13.56 GiB (7.5%) fs: ext4
    dev: /dev/nvme0n1p5
Swap:
  ID-1: swap-1 type: partition size: 32 GiB used: 0 KiB (0.0%)
    dev: /dev/nvme0n1p7
Sensors:
  System Temperatures: cpu: 49.0 C pch: 65.0 C mobo: N/A
  Fan Speeds (rpm): cpu: 0
Repos:
  Packages: 1248
  Active pacman repo servers in: /etc/pacman.conf
    1: https://mirror.ppa.trinitydesktop.org/trinity/archlinux/$arch
  Active pacman repo servers in: /etc/pacman.d/chaotic-mirrorlist
    1: https://cdn-mirror.chaotic.cx/$repo/$arch
    2: https://geo-mirror.chaotic.cx/$repo/$arch
    3: https://br-mirror.chaotic.cx/$repo/$arch
    4: https://bg-mirror.chaotic.cx/$repo/$arch
    5: https://ca-mirror.chaotic.cx/$repo/$arch
    6: https://cl-mirror.chaotic.cx/$repo/$arch
    7: https://de-2-mirror.chaotic.cx/$repo/$arch
    8: https://de-3-mirror.chaotic.cx/$repo/$arch
    9: https://de-4-mirror.chaotic.cx/$repo/$arch
    10: https://fr-mirror.chaotic.cx/$repo/$arch
    11: https://gr-mirror.chaotic.cx/$repo/$arch
    12: https://in-mirror.chaotic.cx/$repo/$arch
    13: https://in-2-mirror.chaotic.cx/$repo/$arch
    14: https://in-3-mirror.chaotic.cx/$repo/$arch
    15: https://in-4-mirror.chaotic.cx/$repo/$arch
    16: https://kr-mirror.chaotic.cx/$repo/$arch
    17: https://es-mirror.chaotic.cx/$repo/$arch
    18: https://es-2-mirror.chaotic.cx/$repo/$arch
    19: https://us-mi-mirror.chaotic.cx/$repo/$arch
    20: https://us-tx-mirror.chaotic.cx/$repo/$arch
    21: https://us-ut-mirror.chaotic.cx/$repo/$arch
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://cdnmirror.com/archlinux/$repo/os/$arch
    2: https://de.arch.niranjan.co/$repo/os/$arch
    3: https://archlinux.uk.mirror.allworldit.com/archlinux/$repo/os/$arch
    4: https://al.arch.niranjan.co/$repo/os/$arch
    5: https://mirror.ubrco.de/archlinux/$repo/os/$arch
    6: https://at.arch.niranjan.co/$repo/os/$arch
    7: https://berlin.mirror.pkgbuild.com/$repo/os/$arch
    8: https://johannesburg.mirror.pkgbuild.com/$repo/os/$arch
    9: https://losangeles.mirror.pkgbuild.com/$repo/os/$arch
    10: https://taipei.mirror.pkgbuild.com/$repo/os/$arch
    11: https://us.arch.niranjan.co/$repo/os/$arch
    12: https://uk.repo.c48.uk/arch/$repo/os/$arch
    13: https://mirror.ufscar.br/archlinux/$repo/os/$arch
    14: https://mirror.lcarilla.de/archlinux/$repo/os/$arch
    15: https://nz.arch.niranjan.co/$repo/os/$arch
    16: https://mirrors.neusoft.edu.cn/archlinux/$repo/os/$arch
    17: https://archlinux.za.mirror.allworldit.com/archlinux/$repo/os/$arch
    18: https://mirror.theash.xyz/arch/$repo/os/$arch
    19: https://mirror.funami.tech/arch/$repo/os/$arch
    20: https://mirror.theo546.fr/archlinux/$repo/os/$arch
  No nix channels found for user: usix
Info:
  Memory: total: 32 GiB available: 31.2 GiB used: 1.25 GiB (4.0%)
  Processes: 240 Uptime: 3m Init: systemd
  Compilers: gcc: 15.2.1 Shell: Bash v: 5.3.3 inxi: 3.3.39

🎞️ Trying to run Plasma

🎞️ Trying to run Trinity and Minetest

Xorg.0.log

sddm.log

xorg.conf.txt

plasmashell_nvidia_dgpu_mode_xlibre.log

Extra fields

• I have checked the existing issues
• I have read the Contributing Guidelines
• I'd like to work on this issue

[ONykyf]

XLibre xserver version 25.0.0.*?

[0x41DEAD41]

25.0.0.11 - if specifically. Just I chose what was in the template.

[stefan11111]

Is this an issue that only happens in Xlibre and not in Xorg?

I have a similar hw setup on my laptop and use a similar xorg.conf, but with 2 screens instead of a screen and an inactive device.

[0x41DEAD41]

Yes, Xorg runs stably with any configuration. The problem only appears with XLibre.

[stefan11111]

The log you posted shows no errors.
When running kde, does if show an error, or does it just not show anything.

Your xorg.conf looks like this:

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia"
    Inactive "intel"
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
    Option "AllowEmptyInitialConfiguration"
EndSection

Section "Device"
    Identifier "intel"
    Driver "modesetting"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection

You are trying to use only the nvidia gpu and disable the intel gpu.
I have a setup similar to yours on my laptop, and this doesn't work.
I have to use both my intel gpu and my nvidia gpu. If I try to disable the intel gpu, I get no output.

Can you try using this xorg.conf:

Section "ServerLayout"
    Identifier     "Layout0"
#intel gpu
    Screen      0  "Screen0"
#nvidia gpu
    Screen      1  "Screen1"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "modesetting"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    BusID          "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
EndSection

[0x41DEAD41]

I really did forget to attach the Plasma log, even though I intended to.

plasmashell_nvidia_dgpu_mode_xlibre.log

Yes, I tried your config. Your config works. It works like hybrid, but has another issues.
Running glxinfo -B

Without prime-run

name of display: :0
pci id for fd 8: 10de:1c8d, driver (null)
pci id for fd 9: 10de:1c8d, driver (null)
pci id for fd 10: 10de:1c8d, driver (null)
glx: failed to create dri3 screen
failed to load driver: nvidia-drm
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel (0x8086)
    Device: Mesa Intel(R) UHD Graphics 630 (CFL GT2) (0x3e9b)
    Version: 25.2.4
    Accelerated: yes
    Video memory: 31946MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 25.2.4-arch1.2
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.2.4-arch1.2
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.2.4-arch1.2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20



display: :0  screen: 1
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Mesa (0x10de)
    Device: zink Vulkan 1.4(NVIDIA GeForce GTX 1050 (NVIDIA_PROPRIETARY)) (0x1c8d)
    Version: 25.2.4
    Accelerated: yes
    Video memory: 4342MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
Memory info (GL_ATI_meminfo):
    VBO free memory - total: 4329 MB, largest block: 4329 MB
    VBO free aux. memory - total: 23952 MB, largest block: 23952 MB
    Texture free memory - total: 4329 MB, largest block: 4329 MB
    Texture free aux. memory - total: 23952 MB, largest block: 23952 MB
    Renderbuffer free memory - total: 4329 MB, largest block: 4329 MB
    Renderbuffer free aux. memory - total: 23952 MB, largest block: 23952 MB
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 4342 MB
    Total available memory: 28301 MB
    Currently available dedicated video memory: 4329 MB
OpenGL vendor string: Mesa
OpenGL renderer string: zink Vulkan 1.4(NVIDIA GeForce GTX 1050 (NVIDIA_PROPRIETARY))
OpenGL core profile version string: 4.6 (Core Profile) Mesa 25.2.4-arch1.2
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.2.4-arch1.2
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.2.4-arch1.2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

With prime-run

name of display: :0
display: :0  screen: 0
direct rendering: Yes
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 4096 MB
    Total available memory: 4096 MB
    Currently available dedicated video memory: 3969 MB
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: NVIDIA GeForce GTX 1050/PCIe/SSE2
OpenGL core profile version string: 4.6.0 NVIDIA 580.95.05
OpenGL core profile shading language version string: 4.60 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6.0 NVIDIA 580.95.05
OpenGL shading language version string: 4.60 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)

OpenGL ES profile version string: OpenGL ES 3.2 NVIDIA 580.95.05
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20



X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  78 (X_CreateColormap)
  Serial number of failed request:  161
  Current serial number in output stream:  174

Trying to get Graphical Information in NVIDIA Settings

(nvidia-settings:2069): GLib-GObject-CRITICAL **: 23:27:59.698: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
pci id for fd 54: 10de:1c8d, driver (null)
pci id for fd 56: 10de:1c8d, driver (null)
pci id for fd 57: 10de:1c8d, driver (null)
glx: failed to create dri3 screen
failed to load driver: nvidia-drm
Segmentation fault         (core dumped) nvidia-settings

It potentially can spawn new bugs, if I've got errors in some programs. What else should I consider?

[stefan11111]

@0x41DEAD41 Can you try building mesa with this patch: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37342

Also, did you load the nvidia_drm module before starting the X server?
What does lsmod show?

Also, if you are sure that the config you used before works in Xorg, could you try to bisect it?
It looks wrong to me though, so I'd be surprised if it actually works in Xorg.

[0x41DEAD41]

Didn’t it already make it upstream? I cloned the repository, your patch was applied and it’s even in a
release. All releases are immediately published to the repository of the distributive I use (Arch BTW).
lsmod | grep nvidia

nvidia_drm            143360  2
nvidia_uvm           3850240  2
nvidia_modeset       1929216  2 nvidia_drm
drm_ttm_helper         16384  1 nvidia_drm
nvidia              111501312  83 nvidia_uvm,nvidia_drm,nvidia_modeset
video                  81920  4 asus_wmi,asus_nb_wmi,i915,nvidia_modeset

NVIDIA DRM has been enabled by default for quite some time.
That configuration was generated by EnvyControl. It’s designed to work across a wide range of laptops, adapting to the hardware as much as is feasible. I ran it with Xorg again. Yes, it still works for me. Your config too, but NVIDIA Settings opens Graphical Information without crash and errors.

[stefan11111]

@0x41DEAD41 What do ls -l /dev/dri and ls /sys/dev/char output?